SEGA's fiscal year ends on March 31st, so they can’t delay Football Manager 2025 (FM25) past that date without it affecting their financial reporting. If it’s listed as a FY2024/25 release, it has to drop before that deadline.
Sports Interactive (SI) usually releases FM games in early November, but if FM25 gets delayed, it must still launch by March 31, 2025, to be counted in SEGA’s FY2025 revenue.